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# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
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# modification, are permitted provided that the following conditions
# are met:
#  * Redistributions of source code must retain the above copyright
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#    from this software without specific prior written permission.
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***************************************************************************/
#include "stdafx.h"
#include "API/GpuTimer.h"
#include "API/Device.h"

namespace Falcor
{
    void GpuTimer::apiBegin()
   {
        vkCmdResetQueryPool(mpLowLevelData->getCommandList(), mpHeap, mStart, 2);
        vkCmdWriteTimestamp(mpLowLevelData->getCommandList(), VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, mpHeap, mStart);
   }

    void GpuTimer::apiEnd()
    {
        vkCmdWriteTimestamp(mpLowLevelData->getCommandList(), VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, mpHeap, mEnd);
    }

    void GpuTimer::apiResolve(uint64_t result[2])
    {
        vk_call(vkGetQueryPoolResults(gpDevice->getApiHandle(), mpHeap, mStart, 2, sizeof(uint64_t) * 2, result, sizeof(result[0]), VK_QUERY_RESULT_64_BIT | VK_QUERY_RESULT_WAIT_BIT));
    }
}
